22 June 2011 New Tenured Group Leader

Prof. Morgan Mitchell

Prof. Morgan Mitchell awarded tenure at ICFO. Prof. Morgan Mitchell has been awarded tenure at ICFO by the Board of Trustees of the Institute.

Born in 1968 in Palo Alto, California, Morgan received his PhD in Physics in 1999 from the University of California at Berkeley (USA) under the direction of Raymond Chiao, one of the founders of the field of nonlinear optics. His thesis studied resonantly-enhanced four-wave mixing in atomic vapors as a quantum-mechanical process. His subsequent work has always involved atoms and quantum light, often in interaction. After Berekely he joined the group of Serge Haroche and Jean-Michel Raimond at the Laboratoire Kastler Brossel in Paris, where he developed methods to interact ultra-cold atoms with whispering-gallery-mode micro-resonators. At Reed College (Portland, USA), he developed the first diode-laser-based entanglement source and an inexpensive quantum nonlocality experiment that has been used by students around the world to demonstrate Bell Inequality violation. At the University of Toronto in the group of Aephraim Steinberg, he performed the first quantum process tomography and demonstrated the first method to make multi-photon “NooN states.” At ICFO since 2004, Prof. Mitchell has built a leading research group in quantum optics with ultra-cold atoms and atom-resonant quantum light (squeezed light, entangled photons and single photons).

At ICFO, Prof. Mitchell’s group has invented many novel, unique, and world-leading techniques for generating, measuring, and employing quantum effects at the interface between atoms and light. This includes semiconductor-laser-based polarization-squeezed light, ultra-bright sources of indistinguishable photon pairs, squeezed-light-enhanced optical magnetometry, heralded single-photons resonant with rubidium atoms and with calcium ions, quantum non-demolition measurements on spin-1 atoms, squeezing of a magnetically-sensitive spin system and quantum metrology beyond the Heisenberg limit. Prof. Mitchell has published about 50 articles, with 25% in Nature, Phys. Rev. Lett. or New J. Phys. He has given invited talks at CLEO, ICOLS, DAMOP, BEC, SQUINT, QUONLOP and other important meetings. Graduates of the Mitchell group have gone on to post-doctoral positions at Oxford, Innsbruck, and Cambridge. Three presidents of Catalunya have visited the Mitchell lab and expressed their admiration.

Prof. Mitchell’s current research includes development of ultra-sensitive, quantum-enhanced magnetometers, use of entangled states for ultra-gentle probing of delicate systems and incorporation of contemporary measurement strategies within quantum metrology.

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